Packing for yielding rotary shafts.



Patented my la, |899. J. G. scrAmA s. K. M. sosrmwsxl. PACKING FOR YIELDING'RTRY SHFTS.

(Appzimian med m. ao, 1897.)

(No Model.)

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UNITED vSIATES JOSEPIIGASTON SCIAMA AND KAZIMIR MARTIN SOSNOWSKI, OF PARIS,

FRANCE, ASSIGNORS TO THE AKTIEBOLAGET DE LAVALS ANGTUR BIN, OF STOCKHOLM, SVEDEN.

. PACKING FOR YlELDlNG,4 ROTARY SHAFTS.

SPECIFICATION forming part 0f Letters 'Patent lNo. 629,136, dated July 18, 1899.

Application iiled December 30, 1897. Serial-No. 664,640. (No model.)

ber 5, 1896; in Denmark, No. 1,206, datedV August 7, 1897; in Belgium, No.123,367, dated September 5, 1896; in Spain, No. 19,612, dated November 2l, 1896; in Italy, No. 42,555, dated September 30, 1896; in Austria, No. 3,086, dated October 4, 1896; in Hungary, No. 7,342,

datedSeptember 9, 1896; in Switzerland, No. 13,259, dated September 17, 1896; in Great Britain, No. 20,514, dated September 16, 1896; in Sweden, No. 8,466, dated September 1,1896, and in France, No. 254,327, dated February 27, 1896,) of which the following is a'specifis` cation.

- In steam-engines, air-compressors, and thev like the leakage of steam, gas, or air is usually avoided bymeans of stuffing-boxes of different constructions. The present invention refers to an improvement for that same object; but the means for packing in question isy especially intended to be applied to springy or yielding shafts-such, for instance, as those used in rapidly revolving steam turbines. Such an appliance has not been possible with the constructions hitherto known.

In the accompanying drawings the invention is shown in two modifications.

Figure 1 shows in vertical section part of a shaft provided with the said packing device.l

Fig. 2 shows in vertical section a modification of the construction of Fig. 1.

A, Fig. 1, indicates an integral sleeve mount ed on the springy or yielding shaft A' by beingpushed thereon so that itts snugly. Said sleeve is provided with annular grooves A2, which have for their obj ect to establish att-ight joint between the sleeve andthe shaft. The

sleeve is mounted on the shaft in such a manner that it can follow the movements' sidewise f or vibrations of the shaft without following its rotation. Preferably the sleeve is made of a material that offers but little frictionsuch as, for instance, coal-carbon or graphite. F is a casing surrounding the sleeve in a similar manner as the casing of an ordinary stuff ing-box, except that it is generally larger in ternally than usual. In this casing'F are secured two disks B and C in such a manner that a tight joint is established between the casing and the disks. Against one of these disks the sleeve Ais intended to rest-namely, against C if the pressure in the casing of the engine is greater than that in the surrounding medium and against B if said pressureis lower than in the surrounding medium. The

disks are made of a moreor less elastic material--such, for instance, as india-rubberboth of the disks, if it be made sufficiently.

long. By this arrangement leakage of steam orfluid under pressure is avoided-viz., at the inner side of the' sleeve A by means of the annular groovesA2 and outside the sleeve by means ofthe disk B or C. Full liberty is given to the shaft to yield sidewise or to vibrate, in which case the sleeve is carried with the shaft, and the disk B or C is correspondingly put out of center or distorted.

In the modification shown in Fig. 2 the sleeve A is not wholly situated between two elastic disks, but is provided with a flange D, which rests against the disk B or against the disk C', according to circumstances.

Whatever be the form of the invention it i@ necessary that the sleeve be elastica-Hy connected with the surrounding casing. Having thus described our invention, what we claim as new is- .f g

l. lThe combination, with a springy or yielding shaft, of an integral sleeve mounted on the shaft, for making a tight joint with the shaft, a casing surrounding the sleeve, and two disks of elastic material, against which the end of said integral sleeveis adapted Ato rest, substantially as set forth.

2. The combi nation, with a sprngy or yield-` ing shaft, of an annularly-flanged integral sleeve. mounted on the shaft for making a tight; joint With the shaft, a casing surround: our invention We have signed our names in ing the sleeve, and. two disks of elastic matepresence of two subscribing witnesses.

rial, into the space between which the Harige JOSEPH GASTON SCIAMA. on said sleeve proj eets,whereby both side sur. KAZIMIR MARTIN SOSNOWSKI. 5 faces of said flange are adapted to rest against Witnesses:

said disks, substantially as set forth. EDWARD P. MACLEAN,

In testimon y that we claim the foregoing as D. T. S. FULLER. 

